Improvement in earth-boring machines



l. BURNS.

Earth-Boring Machines.

Patented August 19, i873.

AM, plm mun/GRAPHIC ca M K (osomvf ma cfss) UNITED STATES iPATENT OFFICE. A

JOSEPH BURNS, OF ANAMOSA, IOWA.

IMPROVEMENT IN EARTH-BORING MACHINES.

Specification forming part of Letters Patent No. 141,916, dated August 19, 1873; application filed April 12, 1873.

To all whom it may concern:

Be it known that I, J osEPH BURNS, of Anamosa, in the county of Jones and State of Iowa, have invented a new and Improved WellBoring Machine, of which the following is a specification:

The invention consists in the improvement of well-boring machines, as hereinafter described, and pointed out in the claims.

Figure lis a side elevation of `my improved well-boring machine with the earth-auger in Working position. Fig. 2 is a horizontal section taken on the line x, Fig. 1. Fig. 3 is a vertical section on the line y y, Fig. 2.

A is the square auger-shaft, having a screwpoint, B, fixed in it permanently. C is the lower part of the screw-auger; it is fitted so as to be adjusted relatively to the point B, to use said point with it ornot, and will have a set-screw to fasten it where it is required to be. D is the upper part of the screw-auger; it is arranged to slide up and down freely, and rests on O when boring. By Vthe bar or plate E, in'which it is fitted to turn freely, and in which it is confined by the collar F, this part of the auger is connected to the cords G, which pass over the pulleys H, under the platform I, to the drum K, which is fitted loosely on the crank-shaft L, and clutches with it to be turned by it for elevating` the boriugs when moved to the right by the lever J, so that the studs M and N will engage, and it disengages and lets the auger D fall again when the lever is moved the other way. This shaft is the same one that is employed to turn the shaft for boring, and is itself turned by the shaft O, pinion P, and wheel Q. The driving power is applied to the shaft by a belt from a steamengine, horse or other power; or it may be by the arms W androds X. vis arranged on the platform'Y of the machine so as to turn freely, and it holds the augerturned by hand. A continuous rotary motion is imparted to the auger-shaft from the shaft L by the levers R, paWls S, and ratchet-nut T, the said levers and pawls being arranged on opposite sides by the nut, and connected to the rock-shaft U by arms V androds V',

` so as to be pushed forward and pulled back at the same time, whereby one turns the nut going one way, and the other going the other way. The pawls are reversible, to turn the shaft either way. The rock-shaft is Worked by the crank-shaft L, to which it is connected The ratchet-nut as new and desire to secure by Letters Patf ent- l. The three-part auger, consisting of the square-shanked centering-bit B, the spiral cutting-blade O, adapted to be adjusted relatively to the centering-bit, and the spiral carrier D, resting upon and continuous with the blade C, all substantially as described.

2. The vibrating levers R R, provided with y carrying-pawls S S, and pivoted loosely on auger-shaft, in combination' with the ratchetnut T, as and for the purpose described.

JOSEPH BURNS.

Witnesses M. W. HEEEIOK, J Q. WING. 

